Retouching device



April 1930- P. F. BOYD RETOUCHING' DEVICE Filed Dec. 29, 1928 2 Sheets-Sheet l BLLH April 8, 1930. P. F. BOYD 1,753,876

' RETOUCHING DEVVICE' Filed Dec. 29, 1928 2 Sheets-Sheet 2 :EFB c11 6.

Patented Apr. 8, 1930 UNITED STATES ATENT QFFICE PAUL I. BOYD, OF CHICAGO, ILLINOIS RETOUCHING DEVICE Application filed December 29, 1928. Serial No. 329,147.

The present invention is directed to im- Referring to the drawings, 1 designates a 'provements in retouching devices. tubular casing having end closures 2 and 3,

The primary object of the invention is to and a partition 4, said partition being disprovide a device of this character so conposed near the closure 2 to provide a cham- 5 structed that photographic negatives can be her 5. accurately and expeditiously retouehed. Mounted in the chamber 5 are pinions 6, Another object of the invention is to propreferably four in number, said pinions havvide a retouching device so constructed that ing shafts 7 which have their respective ends the density of the negative portion can be journaled in the closure 2 and partition 4.

10 increased upon inscribing thereon minute cir- An endless toothed belt 8 is trained around cles in lieu of the dots and lines now comthe pinions 6 in order that they will rotate monly used. in unison. One of the shafts 7 is provided Another object of the invention is to prowith a socket member9, the purpose of which vide a device of this character so constructed will appear later.

15 that the circles inscribed may vary in diam- To the forward ends of the shaft 7 are suiteter. Y ably fixed disks 10, saiddisks having arcu- Another object of the invention is to proate sweeps formed upon their peripheries for vide novel means for mounting the lead in successively engaging the marking lead 12 to order that the same can wobble during operimpart thereto a gyra'tory movement. The

20 ation without the danger'of breaking the disk 10 which is driven positively is prosame. vided with a head 13, the purpose of which Another object of the invention is to prowill be later explained. vide a device of this character which is sim- A tube 14 is provided and has its forward pie in construction, efficient in operation, and end fitted in the partition' i, while its outer 25 one which can be manufactured at a small end is fitted in the closure 3 and it is in this cost tube that the lead 12 is confined. In order lVith these and other objects in view,- this to hold the lead yieldably supported a rubber invention resides in the novel features of consleeve 15 is provided and in which the outer struction, formation, combination and arend of they lead is engaged. The sleeve is 30 rangernent of parts to be hereinafter more confined in a metal casing 16 in order to perfully described, claimed and illustrated in mit the same to slide within the tube withthe accompanying drawing, in which out undue friction. i

Figure 1 is a longitudinal sectional view Having its forward end fitted in the socket through the device. 7 member 9 is a driving shaft 17, the outer end 35 Figure 2 is a sectional View on line-2-2 of which is connected with a flexible drivof Figure 1. ing connection 18 driven by a motor 19. Any

Figure 3- is a sectional view on line 3-3 other suitable driving means maybe provided of Figure 1. if found more desirable. I

Figuretis a fragmentary, longitudinal sec- I Obviously when the shaft 17 is driving the 40 tional view through the device, showing the associated pinion 6 the remaining pinions auxiliary unit attached thereto. will be rotated through the instrumentality of Figure 5 is a sectional view on line 55 the belt 8, thus imparting rotarylmovement of Figure 4,. a to the sweeps 11 to cause the same to succes- Figure 6 is a sectional'vie'w through the lid sively engage the leadlZ to impart thereto supporting sleeve. 1 a gyratory movement in order that the lead 0 a disks Which are slightly greater in diameter than the disks 10, and like said disks have peripheral sweeps 26.

One of the disks 25 has a socket 27 formed therein for detachably receiving the head 13 in order that when the head 19 is fitted upon the casing 1, as shown in Figure 4, the pinions 28 will be driven simultaneously through the medium of the belt 28. The head 19 is provided with a conical portion 29 i in which is provided an opening 30 to accommodate the lead 12.

It Will be obvious that when the auxiliary unit is placed upon the casing 1 that the sweeps 26 of the disks 25 will cause the lead to inscribe comparatively small circles. Thus it will be seen that the device can be used for inscribing circles varying in size.

The speed of the motor 19 may beregulated by a friction brake, or in any manner desired.

Owing to the presence of the rubber sleeve 15 the lead will be normally centralized with in the tube 14 and can wobble when subjected to the action of the respective sweeps.

WVhen the device is used without the auxiliary unit I provide a casing 31 adapted to be fitted upon the casing 1, as shown in Figure 1, the casing 31 having an opening 32 formed therein to accommodate the lead.

Since the sweeps 26 successively engage the lead the action thereon is similar to that of the sweeps 11 carried by the disks 10.

From the foregoing, it is thought that the construction, operation and many advantages 7 of the herein described invention will be apparent to those skilled in the art, Without further description, and it will be understood that various changes in the size, shape, and proportion and minor details of construction may be resorted to without departing from the spirit or sacrificing any of the advantages of the invention.

What is claimed is 1. A device of the class described, comprising a casing, a plurality of pinions mounted in the casing, a belt for simultaneously rotating the pinions, disks connected with the pinions and having sweeps upon their peripheries, a lead mounted in the casing and extended between the disks and successively engaged by the sweeps during rotation of the pinions.

2; A device of the class described, comprising a casing having a plurality of pinions mounted therein, a belt trained around the pinions, means for positively driving one of the pinions, said pinions having disks fixed thereto, said disks having arcuate sweeps carried thereby, a lead engaged in the casing and extended between the disks, said sweeps being adapted to successively engage the lead to impart movement thereto, and means for yieldably supporting the lead.

3. A device of the class described, comprising a casing, a tube mounted in the casing, a

driving shaft mounted in the casing, a plurality of pinions mounted in the casing, means for simultaneously rotating the pinions when the driving shaft is rotated, said pinions having disks connected therewith and having peripheral sweeps, a lead engaged in the tube adapted to be successively engaged by the sweeps during rotation of the disks, and means for yieldably supporting the lead'within the tube.

4. A device of the class described, comprising a casing having a plurality of pinions mounted therein, disks connected with the pinions and having sweeps carried thereby, a

head carried by one of the disks an auxiliary unit having pinions therein provided with disks having sweeps carried thereby, means for interlocking the disks of the unit with said head, and means for driving the first named disks, and thus the disks of the auxiliary unit, and a lead mounted in the casing and subjected to the action of the sweeps of the pinions vof said unit.

5. A device of the class described, comprising a casing, a tube mounted in the casing, a resilient sleeve mounted in the tube, a lead having its outer end engaged in the sleeve, a.

plurality of pinions mounted in the casing ing a casing, a lead mounted in the casing, a plurality OfPlnlOIlS having shafts journaled in the casing, a socket member carried by one of the shafts, disks carried by the shafts, a driving shaft engaged with the socket mem her for imparting rotary movement to the as sociated shaft, a belt trained around the pinions and sweeps carried by the disks for successively engaging the lead when rotary motion is imparted to the pinions.

7. A device of the class described, comprising a casing having a plurality of pinions mounted therein, means for simultaneously driving the pinion, disks connected with the pinions, an auxiliary unit including a plurality of p nions hz g disks con ected th r With, said disks having sweeps carried thereby, means for interlocking a disk of said unit with one of the first named disks for simul taneously driving the pinions of the unit, and a lead engaged with the casing and successive- 1y engaged by said sweeps.

8. A device of the class described comprising a casing, a plurality of pinions associated therewith, means for simultaneously rotating the pinions, sweeps driven by the pinions, and a marking device in the casing adapted to be successively engaged by the sweeps during rotation of the pinions.

In testimony whereof I aflix my signature. 

